Complex Ion Colours Colour recall for all transition metal complex ions whether they be aqueous or solid. 0.0 / 5 ? ChemistryBonding & shapesA2/A-levelAQA Created by: Matthew AldridgeCreated on: 11-04-13 15:32 [Co(H2O)6]2+ Pink Soln. 1 of 26 CoCO3 Pink Ppte. 2 of 26 [CoCl4]2- Blue Soln. 3 of 26 Co(H2O)4(OH)2 Blue Ppte. 4 of 26 [Co(NH3)6]2+ Straw Soln. 5 of 26 [Co(NH3)6]3+ Dark Brown Soln. 6 of 26 [Cr(H2O)6]3+ Ruby Soln. that appears Green 7 of 26 Cr(H2O)3(OH)3 Green Ppte. 8 of 26 [Cr(H2O)6]2+ Blue Soln. 9 of 26 [CrO4]2- Yellow Soln. 10 of 26 [Cr2O7]2- Orange Soln. 11 of 26 Cr(H2O)3(OH)3 Green Ppte. 12 of 26 [Cr(OH)6]3- Green Soln. 13 of 26 [Cr(NH3)6]3+ Purple Soln. 14 of 26 [Cu(H2O)6]2+ Blue Soln. 15 of 26 CuCO3 Blue-Green Ppte. 16 of 26 [CuCl4]2- Yellow-Green Soln. 17 of 26 Cu(H2O)4(OH)2 Blue Ppte. 18 of 26 [Cu(H2O)2(NH3)4]2+ Royal Blue Soln. 19 of 26 [Fe(H2O)6]2+ Pale Green Soln. 20 of 26 Fe(H2O)4(OH)2 Green Ppte. 21 of 26 FeCO3 Green Ppte. 22 of 26 [Fe(H2O)6]3+ Violet Soln. that looks Brown 23 of 26 Fe(H2O)3(OH)3 Brown Ppte. 24 of 26 [Al(H2O)6]3+ Colourless Soln. 25 of 26 Al(H2O)3(OH)3 White Ppte. 26 of 26
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